CN105401514A - Upper portion structure of prefabricated trapezoidal three-support hollow board beam bridge - Google Patents
Upper portion structure of prefabricated trapezoidal three-support hollow board beam bridge Download PDFInfo
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- CN105401514A CN105401514A CN201510683831.8A CN201510683831A CN105401514A CN 105401514 A CN105401514 A CN 105401514A CN 201510683831 A CN201510683831 A CN 201510683831A CN 105401514 A CN105401514 A CN 105401514A
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Abstract
The invention relates to an upper portion structure of a prefabricated trapezoidal three-support hollow board beam bridge. The upper portion structure of the beam bridge comprises the trapezoidal hollow board (1) formed by alternatively splicing a plurality of long bottom sides and short bottom sides, and the trapezoidal hollow board (1) is arranged on a lower portion structure of the beam bridge through two supports (2) arranged on the long bottom side of the bottom face and a support (2) arranged on the short bottom side of the bottom face. Compared with the prior art, the upper portion structure of the prefabricated trapezoidal three-support hollow board beam bridge has the beneficial effects that the support disengaging phenomenon is avoided, a trapezoidal hollow board is simply prefabricated, the beam bridge construction efficiency is high, and economy, durability and driving comfort are excellent.
Description
Technical field
The present invention relates to bridge engineering field, especially relate to a kind of prefabrication and assembly construction trapezoidal three abutments Hollow Slab Beam Bridge superstructure.
Background technology
The problems such as seat empty, Bearing Seat Force inequality and precast plate vibration are the FAQs of Hollow Slab Beam Bridge, and these problems all not only can affect the casting quality of shear connector mortar, also can accelerate the cracking of shear connector.The full-bridge test of Miller (1998) shows the cracking first (Miller near bearing of shear connector, R.A., G.M.Hlavacs, T.WLong, " TestingofFullScalePrestressedBeamstoEvaluateShearKeyPerf ormance, " Report#FHWA/OH-98/019StateJob#14578 (0) .).
The precast plate of the Hollow Slab Beam Bridge of current China adopts rectangle hollow precast plate girder; adopt the mode of sheet-type support four-point supporting; this mode often can make seat empty due to the various errors in construction; cause precast plate " three leg is stressed ", make construct and operation in Bearing Seat Force with design time inconsistent.This seat empty not only can cause precast plate to vibrate in installation process, and then impact hinge seam concrete pouring quality, also can aggravate the vibration of the Hollow Slab Beam Bridge in operation process simultaneously, thus accelerate the destruction of laterally wet seam.
Chinese patent 201510057610.X discloses a kind of hollow slab beam bridge construction, comprises: several hollow slab beams be stitched together, and wherein said hollow slab beam comprises rectangular body; The top of rectangular body is extended with respectively to dual-side and littlely chooses arm reinforcing bar; The end of rectangular body is provided with crossbeam reinforcing bar; Described adjacent hollow slab beam little chooses fill concrete after arm bar connecting, forms the cast-in-place seam of bridge deck, is linked together by adjacent hollow slab beam; Fill concrete after the crossbeam bar connecting of described adjacent hollow slab beam, forms cast-in-place crossbeam seam, is linked together by adjacent hollow slab beam.Integral bridge uniform force is scattered in each hollow slab beam by this patent, although can ensure the stress performance of integral bridge preferably, for single hollow slab beam, does not still solve the problem that rectangle plate-girder easily causes seat empty.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and a kind of prefabrication and assembly construction trapezoidal three abutments Hollow Slab Beam Bridge superstructure is provided.
Object of the present invention can be achieved through the following technical solutions:
A kind of prefabrication and assembly construction trapezoidal three abutments Hollow Slab Beam Bridge superstructure, this beam bridge superstructure comprises the alternately assembled prismatoid hollowcore slab in multiple long and short base, described prismatoid hollowcore slab by be arranged on two bearings at long base, its bottom surface place, short base place a bearing settlement in beam bridge substructure.
Described prismatoid hollowcore slab comprises prismatoid plate main body, and seal minor face head plate and the long limit head plate at prismatoid plate main body two ends respectively, this prismatoid plate main body is prefabricated one-body molded by upper plate, lower shoe and two blocks of webs, and inner hollow forms inner chamber.
Described prismatoid hollowcore slab comprises the side plate be arranged on outside beam bridge two and the middle plate be arranged between two side plates, described side plate is corresponding with beam bridge kind and assembled with middle plate prismatoid plate, described middle plate is isosceles trapezoid body hollowcore slab, when bridge is right bridge, side plate is right-angled trapezium body hollowcore slab, when bridge is skew bridge, side plate can adopt isosceles trapezoid body hollowcore slab or general prismatoid hollowcore slab flexibly.
By laterally just having connect or be laterally hinged with assembled between two adjacent prismatoid hollowcore slabs, the form adding reinforcing bar preferably by wet seam connects.
Described prismatoid hollowcore slab is prepared from by long line prefabrication, and this long line prefabrication comprises the following steps:
A () lays template by the structure of prismatoid hollowcore slab, form hollow template die, and multiple hollow template die adopts laterally " Lin Chang base, short base ", and longitudinally the mode on " Lin Duan base, short base, Lin Chang base, long base " is placed;
B () be assembling reinforcement on request in hollow template die, re-lay prestress wire and stretch-draw, broken line is formed in hollow template die end by steering gear, to the prismatoid main part fluid concrete of hollow template die and maintenance by the prestress wire in the adjacent two hollow template dies longitudinally placed;
C () maintenance completes after, stripping, and put tension prestress steel bundle, and then pour into a mould minor face head plate and long limit head plate, namely obtain required prismatoid hollowcore slab after to be formed.
Described prismatoid hollowcore slab is prepared from by circular prefabricated place, comprises following preparation process:
(A) lay template by the structure of prismatoid hollowcore slab, form hollow template die, the mode that multiple hollow template die adopts in circular precasting yard " Lin Duan base, short base, Lin Chang base, long base " is placed;
(B) assembling reinforcement on request in hollow template die, re-lays prestress wire and stretch-draw, to the prismatoid main part fluid concrete of hollow template die and maintenance;
(C) after maintenance completes, stripping, and put tension prestress steel bundle, cast minor face head plate and long limit head plate, namely obtain required prismatoid hollowcore slab after to be formed.
Two kinds of preparation methods of above-mentioned prismatoid hollowcore slab, especially circular prefabricated place method for making, can utilize prefabricated place fully, suit measures to local conditions, prefabricatedly fast obtain prismatoid hollowcore slab.
The present invention makes beam bridge by the prismatoid hollowcore slab of the three abutments adopting prefabrication and assembly construction is assembled, compared to rectangle hollow precast plate, prismatoid hollowcore slab adopts the hollowcore slab of supported at three point to be a statically determinate structrue, Bearing Seat Force is not by the impact of construction error, the definitely stressed of bearing can be made, there will not be the phenomenon of seat empty simultaneously, and rectangle hollow precast plate is a statically-indeterminate structure of four-point supporting, when adopting laminated rubber bearing, because bearing cannot provide pulling force, just seat empty phenomenon is there will be when there is construction error or precast plate distortion, the Rigid Body in Rotation With of precast plate will inevitably be caused at the bearing place load application come to nothing, be unfavorable for the stable of beam bridge.In addition, owing to adopting the plane form of prismatoid, effectively can reduce the end reaction of prismatoid short brink single support thus the area of reduction bearing, and then reduce the non-homogeneous stress in the seating plane of the generation because beam body reverses.
In addition, for prismatoid hollowcore slab of the present invention, on long base, place arranges double support, the anti-twisting property of prismatoid hollowcore slab can be improved, therefore the angle of torsion produced under construction and operation load is very little, known when corner is very little by turning width=corner × radius, even if the radius of gyration increases to some extent, turning width also can be very little.Although and more weak at minor face place anti-twisting property, but due to the length of side very little, the torsional moment that external load produces is also very little, therefore corner also can be very little, and the radius of gyration of adding minor face place is very little, therefore elastic rotation amplitude also can be very little.Trapezoidal three abutments hollowcore slab of the present invention not only eliminates the Rigid Body in Rotation With of conventional hollow plate, and reduces elastic rotation amplitude, thus can reduce the vibration of precast plate to greatest extent.
Compared with prior art, prismatoid three abutments Hollow Slab Beam Bridge superstructure of the present invention can prevent the seat empty disease of traditional four bearing rectangle hollow plate girder bridges in operation, prevent from beam bridge from connecting beam bridge body because seat empty produces beam bridge vibration to cause damage, the construction method that prismatoid hollowcore slab can adopt " prefabrication; site assembly ", efficiency of construction is high, needed for prefabrication, place is less, cost is low, thus can improve the economy of Hollow Slab Beam Bridge, durability and road-ability.
Accompanying drawing explanation
Fig. 1 is the structural representation of the orthogonal Hollow Slab Beam Bridge superstructure in embodiments of the invention 1;
Fig. 2 is the structural representation of the Skewed Hollow Slab Beam Bridge superstructure in embodiments of the invention 2;
Fig. 3 is the structural representation of isosceles trapezoid body hollowcore slab of the present invention;
Fig. 4 is the section structure schematic diagram of isosceles trapezoid body hollowcore slab of the present invention;
Fig. 5 is the structural representation of right-angled trapezium body hollowcore slab of the present invention;
Fig. 6 is the section structure schematic diagram of right-angled trapezium body hollowcore slab of the present invention;
Fig. 7 is the construction schematic diagram of long line prefabrication of the present invention;
Fig. 8 is the prefabricated construction schematic diagram in the prefabricated place of circle of the present invention;
In figure, 1-prismatoid hollowcore slab, 2-bearing, 3-wets seam, 4-inner chamber, 5-web, 6-minor face head plate, 7-long limit head plate, 8-upper plate, 9-lower shoe, 10-steering gear, 11-prestressed strand.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
A kind of prefabrication and assembly construction trapezoidal three abutments Hollow Slab Beam Bridge superstructure, its structure as shown in Figure 1, this beam bridge superstructure comprise eight long, the prismatoid hollowcore slab 1 that short base is alternately assembled, prismatoid hollowcore slab 1 is provided with two bearings 2 by being arranged on base place on its bottom surface, bottom place is provided with a bearing 2 and is arranged in the substructure of beam bridge, prismatoid hollowcore slab 1 comprises and is arranged on two pieces outside the beam bridge right-angled trapezium body hollowcore slabs as side plate, its structure as shown in Figure 5 and Figure 6, and the six pieces of isosceles trapezoid body hollowcore slabs be arranged between two right-angled trapezium body hollowcore slabs, its structure as shown in Figure 3 and Figure 4, prismatoid hollowcore slab 1 comprises prismatoid plate main body, this prismatoid plate main body is by minor face head plate 6, long limit head plate 7, upper plate 8, lower shoe 9 and two blocks of webs 5 prefabricated one-body molded, and inner hollow forms prismatoid inner chamber 4, connected by wet seam 3 between two adjacent prismatoid hollowcore slabs 1.
Prismatoid hollowcore slab 1 is prepared from by long line prefabrication, and as shown in Figure 7, this long line prefabrication comprises the following steps:
A () lays template by the structure of prismatoid hollowcore slab, form hollow template die, and multiple hollow template die adopts laterally " Lin Chang base, short base ", and longitudinally the mode on " Lin Duan base, short base, Lin Chang base, long base " is placed;
B () be assembling reinforcement on request in hollow template die, re-lay prestress wire and stretch-draw, broken line is formed in hollow template die end by steering gear 10, to the prismatoid main part fluid concrete of hollow template die and maintenance by the prestress wire in the adjacent two hollow template dies longitudinally placed;
C () maintenance completes after, stripping, and put tension prestress steel bundle 11, and then pour into a mould minor face head plate and long limit head plate, namely obtain required prismatoid hollowcore slab after to be formed.
Embodiment 2
A kind of prefabrication and assembly construction trapezoidal three abutments Hollow Slab Beam Bridge superstructure, its structure as shown in Figure 2, this beam bridge superstructure comprise six long, the prismatoid hollowcore slab 1 that short base is alternately assembled, prismatoid hollowcore slab 1 is provided with two bearings 2 by being arranged on base place on its bottom surface, bottom place is provided with a bearing 2 and is arranged in the substructure of beam bridge, prismatoid hollowcore slab 1 comprises and being arranged on outside beam bridge two as two of side plate pieces of isosceles trapezoid body hollowcore slabs, its structure is see shown in Fig. 3 and Fig. 4, and be arranged between two side plates four pieces as in the isosceles trapezoid body hollowcore slab of plate, prismatoid hollowcore slab 1 comprises prismatoid plate main body, this prismatoid plate main body is by minor face head plate 6, long limit head plate 7, upper plate 8, lower shoe 9 and two blocks of webs 5 prefabricated one-body molded, and inner hollow forms prismatoid inner chamber 4, connected by wet seam 3 between two adjacent prismatoid hollowcore slabs 1.
Described prismatoid hollowcore slab is prepared from by circular prefabricated place, as shown in Figure 8, comprises following preparation process:
(A) lay template by the structure of prismatoid hollowcore slab, form hollow template die, the mode that multiple hollow template die adopts in circular precasting yard " Lin Duan base, short base, Lin Chang base, long base " is placed;
(B) assembling reinforcement on request in hollow template die, re-lays prestress wire and stretch-draw, to the prismatoid main part fluid concrete of hollow template die and maintenance;
(C) after maintenance completes, stripping, and put tension prestress steel bundle 11, cast minor face head plate and long limit head plate, namely obtain required prismatoid hollowcore slab after to be formed.
Embodiment 3
A kind of prefabrication and assembly construction trapezoidal three abutments Hollow Slab Beam Bridge superstructure, this beam bridge superstructure comprise six long, the prismatoid hollowcore slab 1 that short base is alternately assembled, prismatoid hollowcore slab 1 is provided with two bearings 2 by being arranged on base place on its bottom surface, bottom place is provided with a bearing 2 and is arranged in the substructure of beam bridge, prismatoid hollowcore slab 1 comprises and being arranged on outside beam bridge two as two of side plate pieces of general prismatoid hollowcore slabs, and be arranged between two side plates four pieces as in the isosceles trapezoid body hollowcore slab of plate, prismatoid hollowcore slab 1 comprises prismatoid plate main body, this prismatoid plate main body is by minor face head plate 6, long limit head plate 7, upper plate 8, lower shoe 9 and two blocks of webs 5 prefabricated one-body molded, and inner hollow forms prismatoid inner chamber 4, connected by wet seam 3 between two adjacent prismatoid hollowcore slabs 1.
Described prismatoid hollowcore slab is prepared from by circular prefabricated place, comprises following preparation process:
(A) lay template by the structure of prismatoid hollowcore slab, form hollow template die, the mode that multiple hollow template die adopts in circular precasting yard " Lin Duan base, short base, Lin Chang base, long base " is placed;
(B) assembling reinforcement on request in hollow template die, re-lays prestress wire and stretch-draw, to the prismatoid main part fluid concrete of hollow template die and maintenance;
(C) after maintenance completes, stripping, and put tension prestress steel bundle 11, cast minor face head plate and long limit head plate, namely obtain required prismatoid hollowcore slab after to be formed.
Above-mentioned is can understand and use invention for ease of those skilled in the art to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the invention is not restricted to above-described embodiment, those skilled in the art, according to announcement of the present invention, do not depart from improvement that scope makes and amendment all should within protection scope of the present invention.
Claims (6)
1. a prefabrication and assembly construction trapezoidal three abutments Hollow Slab Beam Bridge superstructure, it is characterized in that, this beam bridge superstructure comprises the alternately assembled prismatoid hollowcore slab (1) in multiple long and short base, described prismatoid hollowcore slab (1) by being arranged on two bearings (2) at long base, its bottom surface place, a bearing (2) at short base place is arranged in beam bridge substructure.
2. a kind of prefabrication and assembly construction according to claim 1 trapezoidal three abutments Hollow Slab Beam Bridge superstructure, it is characterized in that, described prismatoid hollowcore slab (1) comprises prismatoid plate main body, and seal minor face head plate (6) and long limit head plate (7) at prismatoid plate main body two ends respectively, this prismatoid plate main body is prefabricated one-body molded by upper plate (8), lower shoe (9) and two pieces of webs (5), and inner hollow forms inner chamber (4).
3. a kind of prefabrication and assembly construction according to claim 1 trapezoidal three abutments Hollow Slab Beam Bridge superstructure, it is characterized in that, described prismatoid hollowcore slab (1) comprises the side plate be arranged on outside beam bridge two and the middle plate be arranged between two side plates, described side plate is corresponding with beam bridge kind and assembled with middle plate prismatoid plate, and described middle plate is isosceles trapezoid body hollowcore slab.
4. a kind of prefabrication and assembly construction according to claim 1 trapezoidal three abutments Hollow Slab Beam Bridge superstructure, is characterized in that, is connected between two adjacent prismatoid hollowcore slabs (1) by wet seam (3).
5. a kind of prefabrication and assembly construction according to claim 2 trapezoidal three abutments Hollow Slab Beam Bridge superstructure, is characterized in that, described prismatoid hollowcore slab (1) is prepared from by long line prefabrication, and this long line prefabrication comprises the following steps:
A () lays template by the structure of prismatoid hollowcore slab (1), form hollow template die, and multiple hollow template die adopts laterally " Lin Chang base, short base ", and longitudinally the mode on " Lin Duan base, short base, Lin Chang base, long base " is placed;
B () be assembling reinforcement on request in hollow template die, re-lay prestress wire and stretch-draw, broken line is formed in hollow template die end by steering gear (10), to the prismatoid main part fluid concrete of hollow template die and maintenance by the prestress wire in the adjacent two hollow template dies longitudinally placed;
C () maintenance completes after, stripping, and put tension prestress steel bundle (11), and then pour into a mould minor face head plate (6) and long limit head plate (7), namely obtain required prismatoid hollowcore slab (1) after to be formed.
6. a kind of prefabrication and assembly construction according to claim 2 trapezoidal three abutments Hollow Slab Beam Bridge superstructure, is characterized in that, described prismatoid hollowcore slab (1) is prepared from by circular prefabricated place, comprises following preparation process:
(A) lay template by the structure of prismatoid hollowcore slab (1), form hollow template die, the mode that multiple hollow template die adopts in circular precasting yard " Lin Duan base, short base, Lin Chang base, long base " is placed;
(B) assembling reinforcement on request in hollow template die, re-lays prestress wire and stretch-draw, to the prismatoid main part fluid concrete of hollow template die and maintenance;
(C) after maintenance completes, stripping, and put tension prestress steel bundle (11), cast minor face head plate (6) and long limit head plate (7), namely obtain required prismatoid hollowcore slab (1) after to be formed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510683831.8A CN105401514B (en) | 2015-10-20 | 2015-10-20 | Upper portion structure of prefabricated trapezoidal three-support hollow board beam bridge |
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| CN201510683831.8A CN105401514B (en) | 2015-10-20 | 2015-10-20 | Upper portion structure of prefabricated trapezoidal three-support hollow board beam bridge |
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| CN105401514B CN105401514B (en) | 2017-02-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869007A (en) * | 2017-04-07 | 2017-06-20 | 中国矿业大学 | A kind of single span simply supported girder bridge structure suitable for the sinking land in coalmining areas |
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| CN104631317A (en) * | 2015-02-04 | 2015-05-20 | 上海市政工程设计研究总院（集团）有限公司 | Hollow plate girder bridge structure and construction process thereof |
| KR20150068785A (en) * | 2013-12-12 | 2015-06-22 | 한국건설기술연구원 | Slab gap adjustment apparatus with longitudinal moving and bridge construction method therewith |
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2015
- 2015-10-20 CN CN201510683831.8A patent/CN105401514B/en not_active Expired - Fee Related
Patent Citations (7)
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| KR20040106813A (en) * | 2003-06-11 | 2004-12-18 | 주식회사 국민씨아이 | Installation Method of Deck for Girder Bridges Using Precast Panel of Trapezoidal Hollow Section Made with Glass Fiber Reinforced Composites |
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| CN106869007A (en) * | 2017-04-07 | 2017-06-20 | 中国矿业大学 | A kind of single span simply supported girder bridge structure suitable for the sinking land in coalmining areas |
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